Spinal column retaining method and apparatus

Details Spinal column retaining method and apparatus Spinal column retaining method and apparatus

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61B 17/84 (2006.01)

Patent

CA 2046838

A method and apparatus is provided to retain elements of the spine and/or pelvis in a desired spatial relationship. A plurality of fasteners are connected with a plurality of the elements. A longitudinal member is connected with the fasteners by a plurality of connector members. The longitudinal member and fasteners are movable relative to each other to adjust the distance between the longitudinal member and fasteners to thereby obtain the desired spatial relationship between the longitudinal member and elements to which the fasteners are connected. Once the longitudinal member and fasteners have been positioned in the desired spatial relationship, clamps are engaged to hold the longitudinal member, fasteners and connector members against relative movement. To provide for the adjustability of the longitudinal member relative to the fasteners, oblong openings are formed in the connector members. In one specific method of adjusting the position of the longitudinal member relative to the fasteners, the longitudinal member is rotated about an axis which extends through a portion of the longitudinal member.

Méthode et appareil de maintien d'éléments de la colonne vertébrale et/ou du bassin dans une certaine relation spatiale. De nombreuses attaches sont fixées à un grand nombre d'éléments. Un dispositif longitudinal est relié aux attaches par de nombreux connecteurs. Le dispositif longitudinal et les attaches sont interreliés de façon mobile, ce qui permet de régler la distance entre eux et d'obtenir la relation spatiale voulue entre le dispositif longitudinal et les éléments auxquels les attaches sont fixées. Lorsque le dispositif longitudinal et les attaches ont été positionnés selon une relation spatiale voulue, des pinces sont enclenchées afin de maintenir en place le dispositif longitudinal, les attaches et les connecteurs pour éviter tout déplacement relatif. Pour permettre le réglage du dispositif longitudinal en fonction des attaches, des ouvertures oblongues ont été formées dans les connecteurs. Selon une méthode précise de réglage de la position du dispositif longitudinal par rapport aux attaches, ce dispositif pivote sur un axe situé dans le prolongement d'une partie de ce même dispositif.

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